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3 years ago

PLEASE HELP!

Mathematics

1 answer:

Citrus2011 [14]3 years ago

5 0

Answer:

x - 3y - 7 = 0

Step-by-step explanation:

We can first write this equation in Point Slope form, and then rearrange it to general form.

Note: the given point is (h,k)

Slope is m.

The equation is:

y-k=m(x-h)

Therefore, the equation in point slope form would be:

y+2=1/3(x-1)

Now, we can change that to general form.

y+2=1/3x-1/3

1/3x-1/3-y-2=0

1/3x-y-2 1/3=0

Multiply everything by 3.

x-3y-7=0

Therefore, the corrrect answer is option 3.

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4 years ago

Use the discriminant to determine the number of real solutions to the quadratic equation. n^2 − n − 6 = 0 What is the number of

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Step-by-step explanation:

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4 years ago

Read 2 more answers

Which statement accurately explains whether a reflection over the X-axis and a 180° rotation would map figure ACB onto itself?

Arlecino [84]

Using transformation rules, it is found that the correct option is:

No, A'C'B' is located at A(-1,1), C'(-3,4) and B'(-5,1).

--------------------

The transformation rule for a reflection over the x-axis is $(x,y) \rightarrow (x,- y)$
The transformation rule for a rotation of 180º is $(x,y) \rightarrow (-x,-y)$

After the reflection over the x-axis: $(x,y) \rightarrow (x, -y)$
Taking the reflection, and rotating: $(x,-y) \rightarrow (-x, -(-y)) = (-x,y)$ .
Not the same rule, that is, $(x,y) \rightarrow (x,y)$ , so it would not map figure onto itself.
A(1,1) would be mapped to A(-1,1), for example, thus, the correct option is: